
.header-nav{
    label{ 
        display: inline-block;
        position: relative;
        color:#fff ;
        &.on{
            font-weight: bold;
            &::after{
                content:"";
                background-color: $c_FFF;
                @include widthHeight(100%,4px);
                @include positionAbsolute(0,0,left,bottom);
                @include borderRadius(2px);
            }
        }
    }
}